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Bug 1805798 - JSON parser fails with "prefix" inside "concat"
Summary: JSON parser fails with "prefix" inside "concat"
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: nftables
Version: 8.2
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: 8.3
Assignee: Phil Sutter
QA Contact: Jiri Peska
URL:
Whiteboard:
Depends On:
Blocks: 1685256 1807630
TreeView+ depends on / blocked
 
Reported: 2020-02-21 15:03 UTC by Eric Garver
Modified: 2020-11-04 02:00 UTC (History)
3 users (show)

Fixed In Version: nftables-0.9.3-13.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-04 01:58:24 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHEA-2020:4535 0 None None None 2020-11-04 01:58:38 UTC

Internal Links: 2154905

Description Eric Garver 2020-02-21 15:03:21 UTC 
When testing sets with intervals and concatenations (bug 1795224) it was found that the JSON parser fails when a "prefix" occurs within "concat".

[root@rhel8-test1 shell]# dnf info nftables
Name         : nftables
Epoch        : 1
Version      : 0.9.3
Release      : 11.el8
Architecture : x86_64
Size         : 792 k
Source       : nftables-0.9.3-11.el8.src.rpm

--->8---


[root@rhel8-test1 shell]# cat ./testcases/sets/0044json_prefix_in_concat_0
#!/bin/bash

# JSON parsing "prefix" inside "concat" for a set element

RULESET='{"nftables": [{"metainfo": {"json_schema_version": 1}},
         {"add": {"table": {"family": "inet", "name": "foobar_table"}}},
         {"add": {"set": {"family": "inet", "name": "foobar_set", "table": "foobar_table", "type": ["ipv4_addr", "inet_proto", "inet_service"]}}},
         {"add": {"element": {"elem": [{"concat": [{"prefix": {"addr": "10.10.10.0", "len": 24}}, "sctp", "1234"]}], "family": "inet", "name": "foobar_set", "table": "foobar_table"}}}]}'

set -e
$NFT -j -f - <<< "$RULESET"


[root@rhel8-test1 shell]#  ./run-tests.sh ./testcases/sets/0044json_prefix_in_concat_0
I: using nft binary ./../../src/nft

I: [OK]         ./testcases/sets/0044json_prefix_in_concat_0

I: results: [OK] 1 [FAILED] 0 [TOTAL] 1


[root@rhel8-test1 shell]# NFT=/usr/sbin/nft ./run-tests.sh ./testcases/sets/0044json_prefix_in_concat_0
I: using nft binary /usr/sbin/nft

W: [FAILED]     ./testcases/sets/0044json_prefix_in_concat_0: got 1
internal:0:0-0: Error: Expression type prefix not allowed in context (RHS, PRIMARY).

internal:0:0-0: Error: Parsing expr at index 0 failed.

internal:0:0-0: Error: Invalid set elem at index 0.

internal:0:0-0: Error: Invalid set.

internal:0:0-0: Error: Parsing command array at index 3 failed.

I: results: [OK] 0 [FAILED] 1 [TOTAL] 1
Comment 1 Phil Sutter 2020-05-19 21:37:20 UTC 
Upstream commit to backport:

commit 9475ca305a993751b05cf26ef8e785a00de98b94
Author: Phil Sutter <phil>
Date:   Fri Mar 6 16:15:48 2020 +0100

    parser_json: Support ranges in concat expressions
    
    Duplicate commit 8ac2f3b2fca38's changes to bison parser into JSON
    parser by introducing a new context flag signalling we're parsing
    concatenated expressions.
    
    Fixes: 8ac2f3b2fca38 ("src: Add support for concatenated set ranges")
    Signed-off-by: Phil Sutter <phil>
    Acked-by: Eric Garver <eric>
Comment 7 errata-xmlrpc 2020-11-04 01:58:24 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (nftables bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2020:4535
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